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Cathar · 11-12-2004, 05:13 PM

While we're also discussing pressure drops and their impact on flow rates (/me cheers as this is really what all this stuff is about), we also need to consider that radiators are not static with respect to varying flow rates too.

Throw in a super restrictive block and peg the flow rates back by 20-30%, and if you're already operating just below the 1gpm mark, this will make a significant difference in the performance of heater-core style radiators:

http://thermal-management-testing.com/Thermo12.gif

Ideally we don't want to be falling much below 0.70gpm/2.5LPM if we can help it, even for a weak pump like an Eheim 1046.

11-12-2004, 05:13 PM	#36
Cathar Thermophile Join Date: Sep 2002 Location: Melbourne, Australia Posts: 2,538	While we're also discussing pressure drops and their impact on flow rates (/me cheers as this is really what all this stuff is about), we also need to consider that radiators are not static with respect to varying flow rates too. Throw in a super restrictive block and peg the flow rates back by 20-30%, and if you're already operating just below the 1gpm mark, this will make a significant difference in the performance of heater-core style radiators: http://thermal-management-testing.com/Thermo12.gif Ideally we don't want to be falling much below 0.70gpm/2.5LPM if we can help it, even for a weak pump like an Eheim 1046.